html{
	height: 100%;
}
body{
	margin: 0;
	padding: 0;
	font-family: sans-serif;
	background: chocolate;
}
.logo{
	position: absolute;
	top: 50%;
	left: 50%;
	width: 400px;
	padding: 40px;
	transform: translate(-50%,-50%);
	background: rgba(0,0,0,8);
	box-sizing: border-box;
	box-shadow: 0 15px 25px rgba(0,0,0,6);
	border-radius: 10px;
}
.logo h2{
	margin: 0 0 30px;
	padding: 0;
	color: #fff;
	text-align: center;
}
.logo .user-box{
	position: relative;
}
.logo .user-box input{
	width: 100%;
	padding: 10px 0;
	font-size: 16px;
	color: #fff;
	margin-bottom: 30px;
	/*border: none;*/
	border-bottom: 1px solid white;
	outline: none;
	background: transparent;
}
.logo .user-box label{
	position: absolute;
	top: 0;
	left: 0;
	padding: 10px 0;
	font-size: 16px;
	color: #fff;
	pointer-events: none;
	/*pointer-events: none;*/
	transition: 0.5s;
}
.logo .user-box input:focus ~ label,
.logo .user-box input:valid ~ label{
	top: -30px;
	left: 0;
	color: #03e9f4;
	font-size:12px ;
}
.logo form a{
	position: relative;
	display: inline-block;
	padding: 10px 20px;
	color: #03e9f4;
	font-size: 16px;
	text-decoration: none;
	text-transform: uppercase;
	overflow: hidden;
	transition: .5s;
	margin-top: 40px;
	letter-spacing: 4px;
	}
.logo a:hover{
	background: #03e9f4;
	color: #fff;
	border-radius:5px;
	box-shadow: 0 0 5px #03e9f4,
	0 0 25px #03e9f4,
	0 0 50px #03e9f4,
	0 0 100px #03e9f4;
}
.logo a span{
	position: absolute;
	display: block;
}
.logo a span:nth-child(1){
	top: 0;
	left: -100%;
	width: 100%;
	height: 2px;
	background: linear-gradient(90deg,transparent,#03e9f4);
	animation: btn-anim1 4s linear infinite;
}
@keyframes btn-anim1{
	0%{
		left: -100%;
	}
	50%,100%{
		left: 100%;
	}
}
.logo a span:nth-child(2){
	top: 0;
	right: 0%;
	width: 2px;
    height: 100%;
    background: linear-gradient(180deg,transparent,#03e9f4);
    animation: btn-anim2 4s linear infinite;
    animation-delay:1s ;
}
@keyframes btn-anim2{
	0%{
		top: -100%;
	}
	50%,100%{
		top: 100%;
	}
}
.logo a span:nth-child(3){
	bottom: 0;
	right: -100%;
	width: 100%;
    height: 2px;
    background: linear-gradient(270deg,transparent,#03e9f4);
    animation: btn-anim3 4s linear infinite;
    animation-delay:2s ;
}
@keyframes btn-anim3{
	0%{
		right: -100%;
	}
	50%,100%{
		right: 100%;
	}
}
.logo a span:nth-child(4){
	bottom: -100%;
    left: 0;
	width: 2px;
    height: 100%;
    background: linear-gradient(360deg,transparent,#03e9f4);
    animation: btn-anim4 4s linear infinite;
    animation-delay:3s ;
}
@keyframes btn-anim4{
	0%{
		bottom: -100%;
	}
	50%,100%{
		bottom: 100%;
	}
}